Progress on all games can be saved so don't fret if you hit the big one and have to take a break. In general, it's not that hard to just limp past them in time, or spot the ones positioned in rooms. You can also get a special hologram, labeled Father Elijah's final words, off of his computer.

The vault is actually right in front of you, but it's sealed off. The soundtrack gives you a nice Vegas vibe and is a highlight of the game. You can also get a special hologram, labeled Father Elijah's final words, off of his computer.